Move around with the arrow keys.
When carrying ammo, press "A" to drop mines. Press "A" again to detonate it.
Hold "R" to destroy your tank and restart the level.
Hold "Escape" to exit to the main menu.
Press "M" to mute/unmute.
Think Tank is an action-based game with puzzle elements, coded by Manly-Chicken and designed by Pjorg. The soundtrack is all original compositions by fellow Newgrounds user Theeketel. Thanks to Emrox for beta testing.
The message in the level select is trying to tell you that if you don't play the game all the way through you don't get to submit your score.